Preparation of porous carbon-manganese dioxide nanocomposite for sensitive determination of cadmium ion

Abstract

A cost-effective pyrolysis carbonization, together with a subsequent alkali activation, was performed for the preparation of activated porous carbons (APCs) with meso-/macropores and micropores. This was followed by electrodepositing manganese oxide nanostructures onto the as-prepared APC substrate with a constant anodic current. In addition, as studied by square-wave voltammetry (SWV) measurements, MnO2-activated carbon (AC) was utilized for the detection of cadmium(II) (Cd(II)), where the metal ions accumulated on MnO2-AC. Through the modification of the electrode surface and the optimization of relevant parameters, the behaviour of MnO2-AC reached an optimum level in this study.